Add "UninstallReason" parameter to ExtensionRegistryObserver::OnExtensionUninstalled.

chrome/browser/policy/policy_browsertest.cc

Index: chrome/browser/policy/policy_browsertest.cc
diff --git a/chrome/browser/policy/policy_browsertest.cc b/chrome/browser/policy/policy_browsertest.cc
index f1471600aa010ff7a25397186f500e332611ff4b..3545ec8ded18c0ac803c1eddf49dd55ed91a86a2 100644
--- a/chrome/browser/policy/policy_browsertest.cc
+++ b/chrome/browser/policy/policy_browsertest.cc
@@ -706,7 +706,7 @@ class PolicyTest : public InProcessBrowserTest {
                        : chrome::NOTIFICATION_EXTENSION_UNINSTALL_NOT_ALLOWED,
         content::NotificationService::AllSources());
     extension_service()->UninstallExtension(
-        id, ExtensionService::UNINSTALL_REASON_FOR_TESTING, NULL);
+        id, extensions::UninstalledExtensionInfo::REASON_FOR_TESTING, NULL);
     observer.Wait();
   }